Dr. Megan Ranney, Dean, Yale School of Public Health: On 9/11: "That time set the foundation for where we are today."

Megan Ranney, Dean of the Yale School of Public Health for the past three years plus, reflects on the 25th anniversary of 9/11. And what she has learned and the innovations she has spearheaded leading Yale in an uncertain, highly volatile moment. "The slow destruction of trust is perhaps the greatest challenge."  We will not see any change so long as "we haven't done anything about it."